Title :
Time-Frequency Double Differential Encoding and Detection in Cyclic Prefix Assisted CDMA System
Author :
Fang, Zhaoxi ; Shan, Hangguan ; Wang, Zongxin
Author_Institution :
Dept. of Commun. Sci. & Eng., Fudan Univ., Shanghai
Abstract :
Considering the correlation of channel impulse response (CIR) between two neighboring data blocks in time domain and two adjacent subcarriers in frequency domain, a novel time-frequency double differential encoding scheme is proposed for cyclic prefix assisted CDMA system, and corresponding non-coherent equalization and detection receiver based on minimum mean square error (MMSE) criterion is presented. Computer simulation results show that the proposed method outperforms conventional differential encoding method in fast fading channels and multiuser systems
Keywords :
channel coding; code division multiple access; equalisers; fading channels; least mean squares methods; time-frequency analysis; transient response; CDMA system; MMSE; channel impulse response correlation; computer simulation; cyclic prefix; detection receiver; fading channels; minimum mean square error; multiuser systems; noncoherent equalization; time-frequency double differential encoding; Data engineering; Encoding; Fading; Frequency domain analysis; Interference; Multiaccess communication; Multicarrier code division multiple access; Peak to average power ratio; Time frequency analysis; Transmitters;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2006. WiCOM 2006.International Conference on
Conference_Location :
Wuhan
Print_ISBN :
1-4244-0517-3
DOI :
10.1109/WiCOM.2006.98
